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1. 【High-Quality Material】: The dust filter for painting is made of skin-friendly material to reduce skin irritation. The low breathing resistance ensures unhindered breathing, and the highly efficient filtration precisely blocks contaminants. Note: Replace the filter pad immediately if: - Dust becomes visible in the inner filter layer, - Breathing resistance suddenly increases and you feel short of breath, - Unpleasant odors are noticeable 2. 【Wide Range of Applications】: Cotton filters are universally applicable. You can measure the size of your mask. If the measurements match, the filters can be used interchangeably 3. 【Package Includes】: The package contains 50 pieces of 5N11 respirator mask filters 4. 【95% High Filter Efficiency】: Dust filters for painting achieve a separation efficiency of at least 95% for non-oil-based particles. They effectively block particles with a diameter of more than 0.3 micrometers, significantly reducing the risk of inhalation. Even under changing humidity and temperature conditions, their separation efficiency remains stable, so that the protective effect is not impaired by environmental changes 5. 【Five-Layer Filtration】: The five layers are not simply stacked on top of each other, but form a comprehensive protection system through the functional division of different materials, enabling separation and filtration. It can retain larger particles such as droplets, rainwater, and dust, preventing contaminants from penetrating the inner layers. The outer layer, usually a waterproof nonwoven fabric, provides initial protection against droplets, rain, dust, and other larger particles. It prevents contaminants from directly penetrating the inner layers, thus extending the life of the central filter layer